Bioresource Technology 249 (2018) 751–757 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Removal of chromophore in enzymatic hydrolysis by acid precipitation to improve the quality of xylo-oligosaccharides from corn stalk a,b b a a, Yue-Hai Wang , Jie Zhang , Yong-Shui Qu , Hong-Qiang Li State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China Beijing University of Chemical Technology, Beijing 100029, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: As the most representative functional sugar, the application areas and market demands of xylo-oligosaccharides Corn stalk (XOS) have been expanding year by year. Owing to the complex structure of corn stalk (CS), XOS obtained from Xylo-oligosaccharides (XOS) CS are accompanied by problems such as low purity and high color value, which degrade the product. To Acid precipitation improve the quality of XOS from CS, the enzymatic hydrolysis was precipitated by acid; then, the ethanol elution Activated carbon concentration was systematically investigated after optimizing the adsorption conditions. The results showed Ethanol elution concentration that the purity of XOS was increased to 87.28% from 67.31%, and the color value was decreased to 1050 from 4682 when the acid precipitation
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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